INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 7
·9733-9747
·
IF 4.672
Yingwei Xiong,Jinglan Wang,Min Jin,Xiaohong Wang
Summary Fe 2 O 3 is recognized as a promising oxygen carrier, but the susceptibility to sintering over the redox cycles limits its application. Although depositing Fe 2 O 3 on CeO 2 can simultaneously improve the activity and durability, the formation of CeFeO 3 will decrease the oxygen capacity and thus the efficiency of chemical looping water-gas shift reaction. Doping foreign elements can effectively mitigate the reaction between Fe 2 O 3 and CeO 2 and improve redox reactivity. This work employs Gd 3+ and Sm 3+ as doping elements and investigates the doping effect on hydrogen generation of Fe 2 O 3 /CeO 2 in water-gas shift with chemical looping. The characterizations demonstrate that both Gd and Sm are incorporated into the lattice of CeO 2 and increase the oxygen defect concentration, which boosts the redox reactivities. In addition, the interaction between the dopants and CeO 2 promotes the reduction depth by suppressing the solid reaction between Fe 2 O 3 and CeO 2 and improves the reoxidation reaction between reduced oxygen carriers with steam. As a result, Fe 2 O 3 /Ce 0.8 Sm 0.1 Gd 0.1 O 1.9 shows a high hydrogen yield (8.73 mmol.g −1 ) and hydrogen production rate (582.2 μmol.g −1 .min −1 ), which is 1.67 times higher than that of Fe 2 O 3 /CeO 2 . The performance remains stable over 40 cycles. The introduction of foreign cations may provide an effective method and significantly impact the oxygen carrier design.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 6
·7686-7693
·
IF 4.672
Weibo Shi,Jiayao Wang,Xinyi Zhang,Qingli Wang,Wenwen Deng
Summary Organic electrode materials have attracted extensive attention because of their high flexibility and sustainability, but their application was limited by the disadvantage of dissolution in conventional electrolyte. Here, we designed an all solid-state lithium-ion battery (ASSLIB) with 11,11,12,12-tetracyano-9,10-anthraquinonedimethane (TCAQ) as the cathode and lithium metal as the anode. The solid electrolyte consisted of Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO)/polyoxyethylene(PEO) and lithium bis(trifluoromethanesulfonimide) (LiTFSI) salt. The Li||TCAQ ASSLIB delivered a discharge specific capacity of 83 mAh g −1 at a current density of 17 mA g −1 with a capacity retention of 72.2% after 100 cycles. Our research provided a new organic cathode material for high-performance ASSLIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 10
·14534-14545
·
IF 4.672
Yicen Liu,Bing Zhu,Yan-gai Liu,Hang Zhao,Zekun Wang,Liming Wu,Xi Zhang,Jian Chen
Summary In this study, we synthesized a bimetal hydroxyl fluoride, Co 0.6 Zn 0.4 (OH)F, with an overlapping nanoneedle structure using a simple hydrothermal method. The synthesized Co 0.6 Zn 0.4 (OH)F was used as a new electrode material to study its electrochemical performance. Because of the synergy between Co and Zn and the high ionicity of fluorides, the Co 0.6 Zn 0.4 (OH)F electrode exhibited a discharge capacity of 1355.5 mAh g −1 during the first charging and discharging cycle. After 400 cycles at a current density of 2 A g −1 , the Co 0.6 Zn 0.4 (OH)F electrode showed an excellent specific capacity of 756 mAh g −1 . The Co 0.6 Zn 0.4 (OH)F electrode also exhibited an excellent capacitance contribution rate, indicating good rate performance. In addition, the hydroxyl and oxygen vacancies in the electrode material promoted the lithium/dilithium reactions. Therefore, Co 0.6 Zn 0.4 (OH)F is an excellent lithium storage material with high rate; thus, it has a certain potential application value in the future.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2021
·Vol. 45
·期 15
·21264-21273
·
IF 5.164
Lijie Zhang,Yihang Li,Binze Zhang,Yanhong Wan,Zheqiang Xu,Shaowei Zhang,Tenglong Zhu,Changrong Xia
Summary As a promising technology to address the energy storage challenge, reversible solid oxide cell (RSOC) plays a vital role in conversion between chemical energy and electrical power. Over the last several decades, developing high performance fuel electrodes suitable for reversible operation have attracted extensive attentions. This work develops La 0.1 Sr 0.85 Ti 0.35 Fe 0.6 Ni 0.05 O 3− δ which is an A-site deficient design with B-site having additional 5% nickel as the fuel electrode through in-situ metal exsolution. The in-situ exsolution process results in FeNi 3 alloy particles, about 40 nm in size, while maintaining the perovskite structure of the parent oxide. The FeNi 3 nanoparticles greatly improve the electrochemical performance as RSOC fuel electrode such as reducing the interfacial polarization resistance at 800°C by 13.6%, increasing the peak power density by 19% in the fuel cell mode and increasing the current density by 30% in the electrolysis mode. Furthermore, RSOC operation is demonstrated by 20-cycle reverse tests that are conducted by switching between the fuel cell and electrolysis modes. The stable RSOC performance indicates that La 0.1 Sr 0.85 Ti 0.35 Fe 0.6 Ni 0.05 O 3− δ with in-situ constructed FeNi 3 nanoparticles is a potential fuel electrode material for RSOC.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2021
·Vol. 45
·期 14
·20132-20142
·
IF 5.164
Jiyan Li,Yanju Jing,Xu Zhou,Jialong Mao,Yujie Chen,Hanxue Sun,Xiaofeng Deng,Chengzhi Gao
Summary The application of solar-driven interface evaporation photothermal materials in the complex water environment is facing great challenges, and the development of multifunctional photothermal materials is great significance to the practical application process. In this study, a new kind of photothermal material was first prepared based on the natural pumices, which shows great advantages of lightweight, superhydrophilicity, porous property, and heat insulation. To improve its light absorption capacity and photocatalytic effect, carbon and Ag + were uniformly loaded on pumices (named P-C-Ag + ). The as-resulted P-C-Ag + shows an evaporation rate of 1.395 kg m −2 h −1 which refers to an evaporation efficiency of 88.80% in simulated seawater under 1 kW m −2 illumination. In the rooftop experiment, the cumulative evaporation capacity of the simulated solar evaporator with P-C-Ag + in 8 hours can reach about 7.25 kg m −2 . Meanwhile, almost no salt crystallization was found in the surface of P-C-Ag + during the continuous evaporation process. The P-C-Ag + has a good inhibitory effect on Escherichia coli and algae, and can degrade color dyes, which is also beneficial to water environment, thus holding great potential as multifunctional photothermal material for solar steam generation and water treatment.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2019
·Vol. 43
·期 6
·2162-2171
·
IF 3.343
Wei Li,Shu-ao He,Xiao Wang,Qiong Ma,Chen-hui Zhao
Summary β-iron oxide hydroxide (β-FeOOH) had been proven to be an effective co-catalyst during H 2 evolution reaction (HER) process. In this research, a BiOCl/β-FeOOH heterojunction was successfully synthesized by a solid-state doping method. Then, the structure, composition, and photo-electrochemical properties of the prepared photocatalysts were studied. For the superior HER photocatalytic activity of ultrasmall β-FeOOH nanoparticles (NPs) and the formation of the BiOCl/β-FeOOH heterojunction, this heterojunction photocatalyst exhibited very superior photocatalytic performance in the HER process. Especially, when the amount of incorporated β-FeOOH NPs was appropriate, the BFOH-2 possessed the highest photocatalytic activity in HER process, and the HER rate was about 16.64 mmol·g −1 ·h −1 during illuminated time of 6 hours under visible light. When appropriate, ultrasmall β-FeOOH NPs were implanted into the structure of BiOCl, the BiOCl/β-FeOOH heterojunction interfaces would form for the existence of interfacial interactions. Therefore, this BiOCl/β-FeOOH heterojunction exhibited superior visible-light response, fast photo-carrier migration, and high-efficient separation of photo-carriers, so that the BFOH-2 heterojunction possessed high-efficient hydrogen evolution reaction (HER) photocatalytic activity.
研究领域:
材料科学
·
光催化
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 8
·10606-10619
·
IF 4.672
Xiaoyu Wen,Changfan Zhang,Wei Zhou,Han Chen,Kaixiong Xiang
Summary To address volume expansion from active sulfur and shuttle effect from polysulfides during the electrochemical process of lithium sulfur batteries, nitrogen/sulfur co-doping porous active carbons (NS-PACs) derived from biomass cattail were manufactured by one-step activated hydrothermal method. The effects of N/S atoms co-doping and the activation of KOH on NS-PACs were investigated in the macro-morphology, micro-structure, and electrochemical performance using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET), as well as galvanostatic charge/discharge tests. The experimental data demonstrated that the NS-PACs show stable foam-likes porous structure, and the specific surface area (SSA) and pore volumes are 2155.81 m 2 g −1 and 1.43 cm 3 g −1 , respectively, and reveals perfect N/S atoms doping with S atomic content of 1.4% and N atomic content of 0.78%. Moreover, the initial discharge capacity of NS-PACs is 1477.8 mAh g −1 at 0.1 C and the extraordinary long-run cycling stability after 500 cycles reaches 803.4 mAh g −1 at 2.0 C. These outstanding electrochemical performances of NS-PACs are associated with efficient physical confinement by porous architecture together with the potent chemical adsorption of N/S atoms with polysulfide.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2021
·Vol. 45
·期 11
·16551-16564
·
IF 5.164
Jiuqing Liu,Meng Liu,Cheng Wang,Qihou Li,Jie Li,Ya Chen,Zikun Hong,Feifei Song,Lishun Bai,Fanli Zeng
Summary The dissolution and diffusion of intermediate product polysulfide in lithium-sulfur battery (Li-S) between electrodes pose great challenge for the further application of Li-S batteries. Herein, we first prepared nano SiO 2 blending polyetherimide (PEI) separator modified with acetylene black/polyvinylpyrrolidone (PVP) coating layer. Joint effect of acetylene black and PVP on polysulfide contribute to outstanding cycle performance. The Li-S cell with CP55 separator presents superior cycle performance (650 mAh g −1 ) than the Li-S cells with the Celgard 2320 and PEI-4 separator after 200 cycles. In addition, the SiO 2 blending PEI separator modified with acetylene black/PVP coating layer for Li-S cells shows higher ionic conductivity (2.02 mS cm −1 ), excellent compatibility with lithium and better thermal stability. This work presents a convenient and economical strategy to alleviate polysulfide dissolution and the CP55 separator is a promising candidate for the further application of Li-S batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2021
·Vol. 45
·期 11
·16603-16617
·
IF 5.164
Jiuqing Liu,Cheng Wang,Qihou Li,Jie Li,Ya Chen,Feifei Song,Zikun Hong,Meng Liu,Lishun Bai,Fanli Zeng
Summary Due to its advantages in specific capacity, lithium-oxygen batteries are expected to increase the recharge mileage of electric vehicles. However, the safety and cycle stability problems of lithium-oxygen batteries have not been completely resolved. Herein, through the non-solvent-induced phase separation method combined with the in-situ hydrolysis modification strategy of tetrabutyl titanate, a type of polyetherimide (PEI) separator with typical finger-shaped pores and honeycomb-shaped supporting layer pore structure was prepared. After being infiltrated by EMIM-BF 4 ionic liquid electrolyte, the ionic conductivity of the separator can reach 0.75 mS cm −1 . Due to the low crystallinity, high thermal stability, and stable ion transport pore structure of the separators, the assembled lithium-oxygen batteries can stably cycle for more than 75 cycles under the condition of a limit of 1000 mAh g −1 . In addition, under the strategy of high-performance cathode catalysts and electrolyte additives, the application of the porous PEI separators in lithium-oxygen batteries will be further expanded.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 13
·18562-18572
·
IF 4.672
Bo Tang,Hefei Fan,Qianfeng Liu,Qiang Zhang,Min Liu,Erdong Wang
Summary Aqueous zinc batteries (AZBs) hold great promise for advancing applications in next-generation energy storage devices because of their high safety, high energy density, and low cost. However, zinc metal anodes have greatly impeded the application in AZBs due to their poor cycle performance. Short lifespan, which is caused by dendritic growth, deformation, corrosion, and competing hydrogen evolution, is very tricky. Herein, a stable Sn@Cu foam, prepared by plating tin on copper foam, is reported as the substrate of Zn anodes. We evaluate the quality of plating tin layers, which are prepared by using different tin salt solutions, and Na 2 SnO 3 solution is eventually selected. Electrochemical tests show that Sn@Cu foam can not only inherit the merits of Cu foam but also suppress hydrogen evolution reaction and lower the initial heterogeneous nucleation barrier of deposited Zn. Moreover, in situ observation by optical microscope demonstrates that Zn dendrite growth on Sn layer is suppressed during the plating-stripping process. As a result, a compact Zn layer on Sn@Cu foam is obtained (Zn/Sn@Cu foam), symmetrical cells display superior cycling life of 1800 h at 1 mA cm −2 for 1 mAh cm −2 , and full cells with VO 2 cathode deliver remarkably better cycling stability and longer lifespan.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2021
·Vol. 46
·期 3
·2737-2747
·
IF 5.164
Yueheng Fan,Aiming Wu,Xiaohui Yan,Shuiyun Shen,Zhang Junliang
Summary Both the activity and structure of a cathode, when it is used in non-aqueous Li-O 2 batteries, play a prominent role in the aspects of durability and capacity. In this work, α-MnO 2 /prGO hybrid nanocomposites with a three-dimensional (3D) porous structure are proposed to act as the cathode to improve the battery performance. Highly active α-MnO 2 /prGO nanocomposites with different mass ratios are synthesized through a two-step template method and a subsequent annealing process. It is found that the optimal 50% α-MnO 2 /prGO cathode exhibits outstanding discharge capacity of 13 294 mAh g −1 under the condition of 100 mA g −1 . Meanwhile, with the limited capacity and currency density of 1000 and 100 mA g −1 , respectively, the battery maintains excellent durability for 239 cycles. Significantly, it is clear that the excellent electrochemical performance of the nanocomposites is strongly associated with the synergistic effect of their distinct porous architecture and the ORR/OER catalytic activity.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2019
·Vol. 43
·期 14
·8049-8056
·
IF 3.343
ZhenDong Hao,CongRong Wu,QianQian Zhang,JingBing Liu,Hao Wang
Summary Designing separators with excellent electrolyte wettability is of great significance to improve the electrochemical behavior of lithium-ion batteries (LIBs). Herein, we develop a sandwich-structured separator by facile in situ polymerization of polyaniline (PANI) on the both sides of polypropylene (PP) separator. The introduction of PANI coating improves the electrolyte wettability of the PP separators. Consequently, the cells equipped with this sandwich-structured separator demonstrate superior electrochemical performance including initial capacity, rate performance, and cyclic stability compared with the PP separator. This work may provide a facile approach for separator modification to improve the performance of LIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）